Method for acquiring and evaluating two-dimensional surface texture of asphalt pavement

The invention discloses a method for acquiring and evaluating two-dimensional surface texture of an asphalt pavement, which comprises the following steps of: acquiring a two-dimensional grey-scale map of the surface texture of the asphalt pavement by using a pencil painting method, transmitting the grey-scale map into digital image processing software through scanning, and performing equivalent ellipse processing on an obtained binary image to obtain a two-dimensional surface texture of the asphalt pavement; each equivalent ellipse is the shape and size of the salient point of the asphalt pavement in contact with the tire, then the equivalent point density rho D, the equivalent average area density and the included angle equilibrium rate omega are calculated respectively, the surface texture of the asphalt pavement is evaluated, and association and evaluation can be carried out on the anti-skid performance, the construction uniformity and the pavement durability of the asphalt pavement. According to the metho